Structural refinement and nanomechanical response of laser remelted Al-Al2Cu lamellar eutectic
Laser remelting was employed to refine the interlamellar spacing (λ) to approximately 30nm on an arc-cast Al-32.7wt%Cu eutectic. λ scaled with A ′(h)-°0.25 where h is the distance from the trace bottom, and A ′ is a factor dependent on laser processing conditions. A′ increased with the laser power (...
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| Veröffentlicht in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2017-10, Vol.706 (C), p.115-125 |
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| container_title | Materials science & engineering. A, Structural materials : properties, microstructure and processing |
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| creator | Lei, Qian Ramakrishnan, Bhupendera Prashanth Wang, Shujuan Wang, Yichen Mazumder, Jyotirmoy Misra, Amit |
| description | Laser remelting was employed to refine the interlamellar spacing (λ) to approximately 30nm on an arc-cast Al-32.7wt%Cu eutectic. λ scaled with A ′(h)-°0.25 where h is the distance from the trace bottom, and A ′ is a factor dependent on laser processing conditions. A′ increased with the laser power (at a constant spot diameter) but decreased with the spot diameter (at a constant laser power). The nanoindentation measured hardness increased up to 4.68GPa with decreasing interlamellar spacing, following the Hall-Petch relation. The as-cast eutectics showed microcracks around indents, while cracking was suppressed in the laser remelted nanoscale eutectics. A dislocation theory based mechanism is proposed for the enhanced plastic co-deformation of fine scale laser-remelted Al-Al2Cu eutectics. |
| doi_str_mv | 10.1016/j.msea.2017.08.105 |
| format | Article |
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A′ increased with the laser power (at a constant spot diameter) but decreased with the spot diameter (at a constant laser power). The nanoindentation measured hardness increased up to 4.68GPa with decreasing interlamellar spacing, following the Hall-Petch relation. The as-cast eutectics showed microcracks around indents, while cracking was suppressed in the laser remelted nanoscale eutectics. A dislocation theory based mechanism is proposed for the enhanced plastic co-deformation of fine scale laser-remelted Al-Al2Cu eutectics.</description><identifier>ISSN: 0921-5093</identifier><identifier>EISSN: 1873-4936</identifier><identifier>DOI: 10.1016/j.msea.2017.08.105</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Al-Cu alloys ; Eutectic alloy ; Microstructure ; Plasticity</subject><ispartof>Materials science & engineering. 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A dislocation theory based mechanism is proposed for the enhanced plastic co-deformation of fine scale laser-remelted Al-Al2Cu eutectics.</description><subject>Al-Cu alloys</subject><subject>Eutectic alloy</subject><subject>Microstructure</subject><subject>Plasticity</subject><issn>0921-5093</issn><issn>1873-4936</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLxDAUhYMoOI7-AVfFfWsebdOCm2HwBQMu1K0hvbllMrSpJKngvzd1XLsK-XLOuTeHkGtGC0ZZfXsoxoC64JTJgjaJVSdkxRop8rIV9SlZ0ZazvKKtOCcXIRwopayk1Yp8vEY_Q5y9HjKPvXU4oouZdiZz2k0jwl47C7-v4XNyAbOpzwYd0Ccy4hDRZJsh3wx8OyeeyKB9hnNEiBYuyVmvh4BXf-eavD_cv22f8t3L4_N2s8uhFDLm0IGRRjKha9Fp3Zac6YpzweqOA22MbkxVVsYIJg2ka4097UuQtO5Alm0r1uTmmDuFaFUAm8bvYXIubaFYlSSMJxE_isBPIaTfqk9vR-2_FaNqqVEd1FKjWmpUtEmsSqa7ownT-l8W_ZKODtBYv4Sbyf5n_wHiZXz7</recordid><startdate>20171026</startdate><enddate>20171026</enddate><creator>Lei, Qian</creator><creator>Ramakrishnan, Bhupendera Prashanth</creator><creator>Wang, Shujuan</creator><creator>Wang, Yichen</creator><creator>Mazumder, Jyotirmoy</creator><creator>Misra, Amit</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>20171026</creationdate><title>Structural refinement and nanomechanical response of laser remelted Al-Al2Cu lamellar eutectic</title><author>Lei, Qian ; Ramakrishnan, Bhupendera Prashanth ; Wang, Shujuan ; Wang, Yichen ; Mazumder, Jyotirmoy ; Misra, Amit</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c437t-cbcd7d713a63baa9421a522316b2c08da8d545dd317dc8da6ef0f4c706bc74993</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Al-Cu alloys</topic><topic>Eutectic alloy</topic><topic>Microstructure</topic><topic>Plasticity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lei, Qian</creatorcontrib><creatorcontrib>Ramakrishnan, Bhupendera Prashanth</creatorcontrib><creatorcontrib>Wang, Shujuan</creatorcontrib><creatorcontrib>Wang, Yichen</creatorcontrib><creatorcontrib>Mazumder, Jyotirmoy</creatorcontrib><creatorcontrib>Misra, Amit</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Materials science & engineering. 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| ispartof | Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2017-10, Vol.706 (C), p.115-125 |
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| language | eng |
| recordid | cdi_osti_scitechconnect_1549912 |
| source | Elsevier ScienceDirect Journals |
| subjects | Al-Cu alloys Eutectic alloy Microstructure Plasticity |
| title | Structural refinement and nanomechanical response of laser remelted Al-Al2Cu lamellar eutectic |
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